From: nelson  <nelson1977@gm...>  20050321 18:02:06

hi all! I'm trying to discretize a nonlinear reaction diffusion equation. The equation is discretized in time using forward euler method. So i use the TransientExplicitSystem class. The problem arise when i try to update the solution. In order to have updated values i have to use *system.solution = *system.rhs; this seems to me not to be ok, because i will hope that the library would do it for me after the assembly of the problem RHS. And i think that manipulating directly system.solution is not a good idea if i will solve the equation using MPI...how I will update the solution in this case? 